The chart-topping boyband appeared on a number of radio shows across Birmingham to promote their new album, Jukebox.
Fans waited from 2am to catch a glimpse of Aston, JB, Ortise and Marvin.
Jukebox, their third album, will be available to download on 6th November.
200 competition winners were already given an intimate playback of the record on Great Portland Street in London, before being treated to a free Nandos peri peri chicken.
The lucky fans were then joined by the band in a surprise appearance, which was met with hysteric screams.